21 



two and three inches wide, and long enough to reach round most 

 ordinary trees. A better mateiial to use for these bandages is felt, 

 or some pliable leather ; a bandage of either of these materials of 

 one thickness will answer every purpose, and, besides being more 

 durable than paper, requiring less time in their construction, they 

 possess furthermore the advantage of being without folds wherein 

 the worms could find a hiding place instead of beneath the bandage. 

 Having obtained a piece of leather or felt, cut out a strip about 

 four inches wide and long enough to reach around the trunk of the 

 tree and overlap an inch or more ; tack one end of this bandage to 

 the tree, driving the tacks in to the head ; now pass the other end 

 of the bandage around the tree and fasten this end to the one first 

 tacked down by driving a tack through both. This last tack should 

 not be driven in its whole length, as it will be necessary to with- 

 draw it occasionally. About two weeks after the bandage has been 

 placed on the tree the tack should be withdrawn, the bandage un- 

 wound, and the worms and chrysalids found beneath it should be 

 destroyed, after which the bandage may be replaced and the tack be 

 driven in as before. It will be necessary to repeat this operation 

 about every two weeks throughout the season, or until all of the 

 apples are harvested. 



This bandage system, if persisted in throughout the entire season, 

 will undoubtedly do much toward extirpating the troublesome Apple- 

 worms, not, however until the latter have done all the damage that 

 they are capable of doing. Another method of exterminating these 

 worms, and one which will destroy them before they have had time 

 to commit very serious depredations, is now rapidly gaining favor 

 with many orchardists. It is simply to spray the infested trees 

 with a solution of Paris Green or London Purple, using about two 

 table-spoonfuls of the former or one of the latter to two gallons of 

 water. Prof. A. J, Cook, of the Michigan Agricultural College — who 

 strongly recommends this method — states* that on the twenty-fifth 

 of May, and again on the twentieth of June, he thoroughly sprayed 

 the same Siberian Crab-apple trees with this solution. The fruit of 

 these trees had been seriously injured by the worms whenever they 

 had borne in former years ; yet a careful search made on the nine- 

 teenth of the following August failed to discover a single injured 

 apple save a few into which the worms had burrowed a short dis- 

 tance before the liquid had been applied ; while the fruit on other 

 trees only a few rods ojff, but not sprayed with the liquid, was very 

 much infested with the worms, from one-fourth to one-half being 

 "wormy." To ascertain whether the fruit had retained any of the 

 poison, he cut about one hundred pieces from the blossom end of as 

 many different apples — the part where the poison would be most apt 

 to find a lodgment — which grew in places that had been sprayed 

 so much as to destroy the foliage, and submitted them to a chemist 

 for analysis ; the chemist could find no traces of the poison, it hav- 

 ing been applied so early in the season that the rains had washed 

 it all off. As the manner of applying the poison to the trees has 

 been given in the article on the Yellow Canker-worm, it will be 

 needless to repeat it here. 



*In a paper on "Two new methods of fighting injurious insects," read before the 

 American Association for the Advancement of Science, Boston, 1880. 



